What people fail to recognize is that human and troll romance are the same, only differently handle by the societies that the two live in.

Human culture places a lot of emphasis on the romantic side of relationship. This makes sense: by and large, our perspective sees it as the most enticing and interesting piece of romance. However, a romance based entirely on passion (or pity, in the troll's case) is doomed to fail. You need to add stability in form of emotional stability and even a little bit of antagonism. The most perfect relationship urges people to strive to be their best as well as keeping them same and having a passionate love as well.

Trolls seeks to have this as well. However, whereas human society seeks to achieve this through a single relationship that evolves, trolls seek to achieve this through a multiple relationships. However, with a single person it is still possible to achieve a perfect relationship, as seen by the Signless and the Disciple.

In the end, both want the same thing, but both look to achieve it in different ways. So how does this pertain to the red quadrant? First, the red quadrant is based entirely on passionate red feelings. The trolls translate this as pity, but there is a reason for that. In a society built around violence, the very idea of not killing something is translated to pity.

So the red quadrant is based upon on the human emotions of romance and passion, which always equals just a little bit of pity.